entrance lock

entrance lock

[′en·trəns ‚läk]
(civil engineering)
A lock between the tideway and an enclosed basin made necessary because the levels of the two bodies of water vary; by means of this lock, vessels can pass either way at all states of the tide. Also known as guard lock; tidal lock; tide lock.
References in periodicals archive ?
Police said the perpetrators entered the enclosed area by cutting the entrance lock.
The entrance lock measures about 12 metres by 50 metres, and the dock covers about 5,000 square metres.
At the Blackwall end of the West India Dock, next to the old entrance lock is Cold-harbour, a narrow cobbled lane that runs parallel to the river and loops round to the later entrance lock in the South West India Dock.
Contract notice: market relative to the glazed entrance lock and outdoor facilities for accessibility pmr of the saint-rmy-ls-chevreuse town hall
Princess Elizabeth and Lieutenant Philip Mountbatten, aboard the Mersey Docks & Harbour Board's steam tender Galatea with two large loudspeakers perched on the bow, open Liverpool Docks' new Waterloo entrance lock on May 30, 1940
But first we had to pass through the canal's narrow-looking entrance lock - a delicate procedure for a ship which is 270m long and more than 32m wide.
Contract notice: extension work of the crib la ribambelle: construction of an entrance lock and a section for large
removal and replacement of exterior joinery including curtain walls, replaced by wood-frame wall facades, extension and creation of an entrance lock, renovation of the building.
Tenders are invited for Providing And Fixing Old Rubber Tyres To Act As Fenders For A Period Of One Year At Entrance Lock And Dock Wall Inside Indira Dock Gwsd
Limited tenders are invited for providing and fixing old rubber tyres to act as fenders for a period of one year at entrance lock and dock wall in indira dock, gwsd.